{"id":2614,"date":"2025-11-30T03:29:42","date_gmt":"2025-11-30T00:29:42","guid":{"rendered":"https:\/\/www.dchost.com\/blog\/siber-guvenlik-tehditleri-artiyor-aginizi-ve-sunucularinizi-gercekci-sekilde-nasil-korursunuz\/"},"modified":"2025-11-30T03:29:42","modified_gmt":"2025-11-30T00:29:42","slug":"siber-guvenlik-tehditleri-artiyor-aginizi-ve-sunucularinizi-gercekci-sekilde-nasil-korursunuz","status":"publish","type":"post","link":"https:\/\/www.dchost.com\/blog\/siber-guvenlik-tehditleri-artiyor-aginizi-ve-sunucularinizi-gercekci-sekilde-nasil-korursunuz\/","title":{"rendered":"Siber G\u00fcvenlik Tehditleri Art\u0131yor: A\u011f\u0131n\u0131z\u0131 ve Sunucular\u0131n\u0131z\u0131 Ger\u00e7ek\u00e7i \u015eekilde Nas\u0131l Korursunuz?"},"content":{"rendered":"<div class=\"dchost-blog-content-wrapper\"><p>Siber g\u00fcvenlik tehditleri art\u0131k sadece bankalar\u0131n, teknoloji devlerinin veya kritik altyap\u0131lar\u0131n sorunu de\u011fil. Orta \u00f6l\u00e7ekli bir e-ticaret sitesi, birka\u00e7 m\u00fc\u015fterili bir ajans, bir hukuk b\u00fcrosu ya da e\u011fitim platformu\u2026 DCHost olarak sahada g\u00f6rd\u00fc\u011f\u00fcm\u00fcz tablo, \u00f6l\u00e7ekten ba\u011f\u0131ms\u0131z herkesin do\u011frudan hedef olabildi\u011fi y\u00f6n\u00fcnde. \u00d6zellikle son y\u0131llarda hem sald\u0131r\u0131 say\u0131s\u0131 hem de sald\u0131r\u0131lar\u0131n karma\u015f\u0131kl\u0131\u011f\u0131 belirgin bi\u00e7imde artm\u0131\u015f durumda. Bu art\u0131\u015f, yaln\u0131zca daha \u00e7ok sald\u0131rgan olmas\u0131ndan de\u011fil, sald\u0131r\u0131 ara\u00e7lar\u0131n\u0131n ve otomasyonun ucuzlay\u0131p yayg\u0131nla\u015fmas\u0131ndan da kaynaklan\u0131yor.<\/p>\n<p>Bu yaz\u0131da \u201ctehditler art\u0131yor\u201d c\u00fcmlesini tekrar etmekle yetinmeyece\u011fiz. Ger\u00e7ek\u00e7i bir yerden bak\u0131p \u015fu sorular\u0131 netle\u015ftirece\u011fiz: Hangi sald\u0131r\u0131 t\u00fcrleri ger\u00e7ekten y\u00fckseli\u015fte? \u0130\u015fletmeler bu riski nas\u0131l \u00f6l\u00e7ebilir? Bir a\u011f ve sunucu altyap\u0131s\u0131 tehditlerin bug\u00fcn\u00fcn\u00fc ve yar\u0131n\u0131n\u0131 kald\u0131racak \u015fekilde nas\u0131l tasarlan\u0131r? Ve en \u00f6nemlisi; s\u0131n\u0131rl\u0131 b\u00fct\u00e7eyle, g\u00fcnl\u00fck operasyonu kilitlemeden at\u0131labilecek en mant\u0131kl\u0131 ad\u0131mlar neler? Daha stratejik bir \u00e7er\u00e7eve ar\u0131yorsan\u0131z, ayr\u0131ca <a href=\"https:\/\/www.dchost.com\/blog\/siber-guvenlik-tehditleri-artiyor-isletmeler-icin-gercekci-yol-haritasi\/\">Siber G\u00fcvenlik Tehditleri Art\u0131yor: \u0130\u015fletmeler \u0130\u00e7in Ger\u00e7ek\u00e7i Yol Haritas\u0131<\/a> yaz\u0131m\u0131za da mutlaka g\u00f6z atman\u0131z\u0131 \u00f6neririz.<\/p>\n<div id=\"toc_container\" class=\"toc_transparent no_bullets\"><p class=\"toc_title\">\u0130&ccedil;indekiler<\/p><ul class=\"toc_list\"><li><a href=\"#Siber_guvenlik_tehditleri_neden_bu_kadar_hizli_artiyor\"><span class=\"toc_number toc_depth_1\">1<\/span> Siber g\u00fcvenlik tehditleri neden bu kadar h\u0131zl\u0131 art\u0131yor?<\/a><\/li><li><a href=\"#En_cok_karsilastigimiz_saldiri_turleri\"><span class=\"toc_number toc_depth_1\">2<\/span> En \u00e7ok kar\u015f\u0131la\u015ft\u0131\u011f\u0131m\u0131z sald\u0131r\u0131 t\u00fcrleri<\/a><ul><li><a href=\"#Kimlik_bilgisi_hirsizligi_ve_phishing\"><span class=\"toc_number toc_depth_2\">2.1<\/span> Kimlik bilgisi h\u0131rs\u0131zl\u0131\u011f\u0131 ve phishing<\/a><\/li><li><a href=\"#Fidye_yazilimlari_ve_veri_santaji\"><span class=\"toc_number toc_depth_2\">2.2<\/span> Fidye yaz\u0131l\u0131mlar\u0131 ve veri \u015fantaj\u0131<\/a><\/li><li><a href=\"#DDoS_saldirilari_ve_hizmet_kesintisi\"><span class=\"toc_number toc_depth_2\">2.3<\/span> DDoS sald\u0131r\u0131lar\u0131 ve hizmet kesintisi<\/a><\/li><li><a href=\"#Web_uygulamasi_zafiyetleri_SQL_Injection_XSS_ve_digerleri\"><span class=\"toc_number toc_depth_2\">2.4<\/span> Web uygulamas\u0131 zafiyetleri: SQL Injection, XSS ve di\u011ferleri<\/a><\/li><li><a href=\"#Ic_tehditler_ve_yanlis_yapilandirmalar\"><span class=\"toc_number toc_depth_2\">2.5<\/span> \u0130\u00e7 tehditler ve yanl\u0131\u015f yap\u0131land\u0131rmalar<\/a><\/li><\/ul><\/li><li><a href=\"#Artan_tehditlere_karsi_temel_guvenlik_mimarisi\"><span class=\"toc_number toc_depth_1\">3<\/span> Artan tehditlere kar\u015f\u0131 temel g\u00fcvenlik mimarisi<\/a><ul><li><a href=\"#Katmanli_guvenlik_yaklasimi\"><span class=\"toc_number toc_depth_2\">3.1<\/span> Katmanl\u0131 g\u00fcvenlik yakla\u015f\u0131m\u0131<\/a><\/li><li><a href=\"#Sifir_guven_Zero_Trust_prensipleri\"><span class=\"toc_number toc_depth_2\">3.2<\/span> S\u0131f\u0131r g\u00fcven (Zero Trust) prensipleri<\/a><\/li><li><a href=\"#Ag_segmentasyonu_ve_mikro_segmentasyon\"><span class=\"toc_number toc_depth_2\">3.3<\/span> A\u011f segmentasyonu ve mikro segmentasyon<\/a><\/li><\/ul><\/li><li><a href=\"#Sunucu_ve_hosting_tarafinda_neleri_yeniden_dusunmelisiniz\"><span class=\"toc_number toc_depth_1\">4<\/span> Sunucu ve hosting taraf\u0131nda neleri yeniden d\u00fc\u015f\u00fcnmelisiniz?<\/a><ul><li><a href=\"#Dogru_altyapi_modeli_Paylasimli_mi_VPS_mi_dedicated_mi\"><span class=\"toc_number toc_depth_2\">4.1<\/span> Do\u011fru altyap\u0131 modeli: Payla\u015f\u0131ml\u0131 m\u0131, VPS mi, dedicated m\u0131?<\/a><\/li><li><a href=\"#Sunucu_sertlestirme_Varsayilanlari_birakmayin\"><span class=\"toc_number toc_depth_2\">4.2<\/span> Sunucu sertle\u015ftirme: Varsay\u0131lanlar\u0131 b\u0131rakmay\u0131n<\/a><\/li><li><a href=\"#Web_uygulamasi_guvenligi_WAF_guvenlik_basliklari_ve_uygulama_ayarlari\"><span class=\"toc_number toc_depth_2\">4.3<\/span> Web uygulamas\u0131 g\u00fcvenli\u011fi: WAF, g\u00fcvenlik ba\u015fl\u0131klar\u0131 ve uygulama ayarlar\u0131<\/a><\/li><li><a href=\"#WordPress_ve_populer_CMSler_icin_ozel_onlemler\"><span class=\"toc_number toc_depth_2\">4.4<\/span> WordPress ve pop\u00fcler CMS\u2019ler i\u00e7in \u00f6zel \u00f6nlemler<\/a><\/li><li><a href=\"#Yedekleme_ve_felaket_kurtarma_Fidye_yazilimi_sonrasi_hayatta_kalma_plani\"><span class=\"toc_number toc_depth_2\">4.5<\/span> Yedekleme ve felaket kurtarma: Fidye yaz\u0131l\u0131m\u0131 sonras\u0131 hayatta kalma plan\u0131<\/a><\/li><\/ul><\/li><li><a href=\"#Isletmeler_icin_uygulanabilir_guvenlik_yol_haritasi\"><span class=\"toc_number toc_depth_1\">5<\/span> \u0130\u015fletmeler i\u00e7in uygulanabilir g\u00fcvenlik yol haritas\u0131<\/a><ul><li><a href=\"#1_Asama_030_gun_Envanter_ve_temel_hijyen\"><span class=\"toc_number toc_depth_2\">5.1<\/span> 1. A\u015fama (0\u201330 g\u00fcn): Envanter ve temel hijyen<\/a><\/li><li><a href=\"#2_Asama_3090_gun_Izleme_loglama_ve_gorunurluk\"><span class=\"toc_number toc_depth_2\">5.2<\/span> 2. A\u015fama (30\u201390 g\u00fcn): \u0130zleme, loglama ve g\u00f6r\u00fcn\u00fcrl\u00fck<\/a><\/li><li><a href=\"#3_Asama_90_gun_ve_sonrasi_Surecler_egitim_ve_olgunlasma\"><span class=\"toc_number toc_depth_2\">5.3<\/span> 3. A\u015fama (90 g\u00fcn ve sonras\u0131): S\u00fcre\u00e7ler, e\u011fitim ve olgunla\u015fma<\/a><\/li><\/ul><\/li><li><a href=\"#DCHost_olarak_neleri_standart_hale_getiriyoruz\"><span class=\"toc_number toc_depth_1\">6<\/span> DCHost olarak neleri standart hale getiriyoruz?<\/a><\/li><li><a href=\"#Sonuc_Tehditler_artiyor_peki_siz_ne_yapacaksiniz\"><span class=\"toc_number toc_depth_1\">7<\/span> Sonu\u00e7: Tehditler art\u0131yor, peki siz ne yapacaks\u0131n\u0131z?<\/a><\/li><\/ul><\/div>\n<h2><span id=\"Siber_guvenlik_tehditleri_neden_bu_kadar_hizli_artiyor\">Siber g\u00fcvenlik tehditleri neden bu kadar h\u0131zl\u0131 art\u0131yor?<\/span><\/h2>\n<p>Tehdit say\u0131s\u0131n\u0131n artmas\u0131n\u0131 tek bir nedene ba\u011flamak ger\u00e7ek\u00e7i olmaz. Sahada g\u00f6rd\u00fc\u011f\u00fcm\u00fcz birka\u00e7 ana etken var ve bunlar bir araya geldi\u011finde tabloyu a\u00e7\u0131kl\u0131yor:<\/p>\n<ul>\n<li><strong>Dijitalle\u015fmenin h\u0131zlanmas\u0131:<\/strong> \u0130\u015f s\u00fcre\u00e7leri, \u00f6deme sistemleri, m\u00fc\u015fteri ili\u015fkileri, hatta insan kaynaklar\u0131 bile web tabanl\u0131 uygulamalara ta\u015f\u0131nd\u0131. Sald\u0131rgan\u0131n tarayaca\u011f\u0131, brute-force deneyece\u011fi, zafiyet arayaca\u011f\u0131 y\u00fczlerce yeni kap\u0131 a\u00e7\u0131ld\u0131.<\/li>\n<li><strong>Uzaktan \u00e7al\u0131\u015fma ve hibrit modeller:<\/strong> Evden, kafeden, mobil ba\u011flant\u0131dan eri\u015fen \u00e7al\u0131\u015fan say\u0131s\u0131 artt\u0131k\u00e7a, kontrol edemedi\u011finiz u\u00e7 noktalar\u0131n say\u0131s\u0131 da art\u0131yor. Zay\u0131f Wi-Fi \u015fifreleri, g\u00fcncellenmemi\u015f ki\u015fisel bilgisayarlar, ortak kullan\u0131lan cihazlar yeni riskler yarat\u0131yor.<\/li>\n<li><strong>Sald\u0131r\u0131 ara\u00e7lar\u0131n\u0131n kolayla\u015fmas\u0131:<\/strong> Bug\u00fcn geli\u015fmi\u015f siber sald\u0131r\u0131lar i\u00e7in \u00fcst d\u00fczey teknik bilgi \u015fart de\u011fil. Haz\u0131r ara\u00e7lar, otomatik tarama ve istismar \u00e7er\u00e7eveleri, karanl\u0131k pazarlarda sat\u0131lan hizmetler; teknik kapasitesi s\u0131n\u0131rl\u0131 ki\u015filerin bile ciddi sald\u0131r\u0131lar yapabilmesini sa\u011fl\u0131yor.<\/li>\n<li><strong>Verinin para de\u011ferinin artmas\u0131:<\/strong> M\u00fc\u015fteri veri tabanlar\u0131, kredi kart\u0131 bilgileri, t\u0131bbi kay\u0131tlar, ticari s\u0131rlar\u2026 Her biri do\u011frudan paraya \u00e7evrilebilen, fidye i\u00e7in kullan\u0131labilen veya karaborsada sat\u0131labilen varl\u0131klar.<\/li>\n<li><strong>Yanl\u0131\u015f yap\u0131land\u0131rmalar\u0131n \u00e7o\u011falmas\u0131:<\/strong> Yeni sistemler h\u0131zla devreye al\u0131n\u0131yor, ama \u00e7o\u011fu zaman g\u00fcvenlik tasar\u0131m\u0131 en sona b\u0131rak\u0131l\u0131yor. \u201cSonra sertle\u015ftiririz\u201d denilen test ortamlar\u0131 canl\u0131ya ta\u015f\u0131n\u0131yor, a\u00e7\u0131k y\u00f6netim panelleri internetten eri\u015filebilir kal\u0131yor.<\/li>\n<\/ul>\n<p>Sonu\u00e7: Tehditler sadece artm\u0131yor, ayn\u0131 zamanda <strong>daha ucuz, daha otomatik ve daha yayg\u0131n<\/strong> hale geliyor. Bu y\u00fczden art\u0131k \u201ckimse bizi hedef almaz\u201d c\u00fcmlesi, risk y\u00f6netimi a\u00e7\u0131s\u0131ndan tehlikeli bir varsay\u0131m.<\/p>\n<h2><span id=\"En_cok_karsilastigimiz_saldiri_turleri\">En \u00e7ok kar\u015f\u0131la\u015ft\u0131\u011f\u0131m\u0131z sald\u0131r\u0131 t\u00fcrleri<\/span><\/h2>\n<p>DCHost taraf\u0131nda loglar\u0131, olay kay\u0131tlar\u0131n\u0131, firewall uyar\u0131lar\u0131n\u0131 inceledi\u011fimizde belirli sald\u0131r\u0131 kal\u0131plar\u0131n\u0131n \u00f6ne \u00e7\u0131kt\u0131\u011f\u0131n\u0131 g\u00f6r\u00fcyoruz. Tehdit manzaras\u0131n\u0131 net g\u00f6rmek, hangi savunma katman\u0131na ne kadar yat\u0131r\u0131m yapaca\u011f\u0131n\u0131z\u0131 planlaman\u0131za yard\u0131mc\u0131 olacakt\u0131r.<\/p>\n<h3><span id=\"Kimlik_bilgisi_hirsizligi_ve_phishing\">Kimlik bilgisi h\u0131rs\u0131zl\u0131\u011f\u0131 ve phishing<\/span><\/h3>\n<p>\u0130\u015fin ba\u015flang\u0131\u00e7 noktas\u0131 \u00e7o\u011fu zaman bir parola. Sald\u0131rgan\u0131n amac\u0131; y\u00f6netim paneli, e-posta hesab\u0131, VPN ya da uzak masa\u00fcst\u00fc gibi kritik eri\u015fim noktalar\u0131na s\u0131zmak. Bunu da \u00fc\u00e7 temel y\u00f6ntemle yap\u0131yorlar:<\/p>\n<ul>\n<li><strong>Phishing (oltalama) e-postalar\u0131:<\/strong> Kargo bildirimi, sahte bankac\u0131l\u0131k uyar\u0131s\u0131, fatura hat\u0131rlatmas\u0131, hatta IT departman\u0131 mesaj\u0131 k\u0131l\u0131\u011f\u0131nda gelen e-postalarla kullan\u0131c\u0131dan \u015fifre isteniyor.<\/li>\n<li><strong>Brute-force ve credential stuffing:<\/strong> S\u0131zd\u0131r\u0131lm\u0131\u015f kullan\u0131c\u0131 ad\u0131\/\u015fifre listeleri otomatik ara\u00e7larla sunucu giri\u015f ekranlar\u0131nda deneniyor. Zay\u0131f veya tekrar kullan\u0131lan \u015fifreler burada ilk d\u00fc\u015fenler oluyor.<\/li>\n<li><strong>Sahte giri\u015f sayfalar\u0131:<\/strong> Ger\u00e7ek siteye neredeyse birebir benzeyen formlar \u00fczerinden kullan\u0131c\u0131 bilgileri toplan\u0131yor.<\/li>\n<\/ul>\n<p>Bu t\u00fcr sald\u0131r\u0131lara kar\u015f\u0131 en etkili savunma; g\u00fc\u00e7l\u00fc parola politikas\u0131, iki fakt\u00f6rl\u00fc kimlik do\u011frulama, kimlik tabanl\u0131 eri\u015fim kurallar\u0131 ve kullan\u0131c\u0131 fark\u0131ndal\u0131k e\u011fitimlerinin birle\u015fimidir. \u00d6zellikle y\u00f6netim panellerine, SSH\/RDP oturumlar\u0131na ekstra do\u011frulama katmanlar\u0131 koymadan \u201cg\u00fcvendeyiz\u201d demek bug\u00fcn i\u00e7in iddial\u0131 olur.<\/p>\n<h3><span id=\"Fidye_yazilimlari_ve_veri_santaji\">Fidye yaz\u0131l\u0131mlar\u0131 ve veri \u015fantaj\u0131<\/span><\/h3>\n<p>Fidye yaz\u0131l\u0131mlar\u0131 art\u0131k sadece dosyalar\u0131n\u0131z\u0131 \u015fifrelemiyor; verilerinizi d\u0131\u015far\u0131 \u00e7\u0131kar\u0131p, yay\u0131nlamakla da \u015fantaj yap\u0131yor. Bu iki a\u015famal\u0131 model y\u00fcz\u00fcnden \u201cyedekten geri d\u00f6nerim\u201d c\u00fcmlesi tek ba\u015f\u0131na yetmiyor, \u00e7\u00fcnk\u00fc veri s\u0131z\u0131nt\u0131s\u0131n\u0131n hukuki ve itibar boyutu devam ediyor.<\/p>\n<p>Sahay\u0131 inceledi\u011fimizde, fidye yaz\u0131l\u0131mlar\u0131n\u0131n genellikle \u00fc\u00e7 giri\u015f noktas\u0131n\u0131 kulland\u0131\u011f\u0131n\u0131 g\u00f6r\u00fcyoruz:<\/p>\n<ul>\n<li>G\u00fcncellenmemi\u015f VPN cihazlar\u0131 ve uzak eri\u015fim kap\u0131lar\u0131<\/li>\n<li>Zay\u0131f korunan RDP\/SSH servisleri<\/li>\n<li>Phishing yoluyla ele ge\u00e7irilen kullan\u0131c\u0131 hesaplar\u0131<\/li>\n<\/ul>\n<p>Bu tehdit t\u00fcr\u00fcne kar\u015f\u0131 <strong>3-2-1 yedekleme stratejisi<\/strong>, izole yedekler ve imzalanm\u0131\u015f, de\u011fi\u015ftirilemez (immutable) yedek depolama se\u00e7enekleri kritik. Bu konuda detayl\u0131 bir \u00e7er\u00e7eve ar\u0131yorsan\u0131z <a href=\"https:\/\/www.dchost.com\/blog\/3-2-1-yedekleme-stratejisi-neden-ise-yariyor-cpanel-plesk-ve-vpste-otomatik-yedekleri-nasil-kurarsin\/\">3-2-1 yedekleme stratejisi rehberimizde<\/a> cPanel, Plesk ve <a href=\"https:\/\/www.dchost.com\/tr\/vps\">VPS<\/a> ortamlar\u0131nda pratik kurulum ad\u0131mlar\u0131n\u0131 anlatt\u0131k.<\/p>\n<h3><span id=\"DDoS_saldirilari_ve_hizmet_kesintisi\">DDoS sald\u0131r\u0131lar\u0131 ve hizmet kesintisi<\/span><\/h3>\n<p>DDoS (Distributed Denial of Service) sald\u0131r\u0131lar\u0131, amiyane tabirle sitenize, API\u2019nize veya oyun sunucunuza \u201ckontrols\u00fcz trafik y\u0131\u011fma\u201d sald\u0131r\u0131lar\u0131d\u0131r. Ama\u00e7, hizmeti me\u015fru kullan\u0131c\u0131lara kapatmak, altyap\u0131y\u0131 yormak, hatta baz\u0131 durumlarda bu karga\u015fa i\u00e7inde ba\u015fka zafiyetlerden i\u00e7eri s\u0131zmakt\u0131r.<\/p>\n<p>DDoS sald\u0131r\u0131lar\u0131n\u0131n artmas\u0131n\u0131n iki temel sebebi var: Botnet\u2019lerin ucuzlamas\u0131 ve \u201chizmet olarak sald\u0131r\u0131\u201d modelinin yayg\u0131nla\u015fmas\u0131. Bug\u00fcn teknik bilgisi k\u0131s\u0131tl\u0131 biri bile, birka\u00e7 t\u0131klamayla belli bir hedefe ciddi DDoS trafi\u011fi y\u00f6neltebiliyor.<\/p>\n<p>Bu konuda daha odakl\u0131 bir okuma i\u00e7in <a href=\"https:\/\/www.dchost.com\/blog\/siber-guvenlik-tehditlerinde-ddos-saldirilari-neden-yukseliyor\/\">DDoS sald\u0131r\u0131lar\u0131n\u0131n neden y\u00fckseldi\u011fini anlatt\u0131\u011f\u0131m\u0131z yaz\u0131m\u0131z\u0131<\/a> ve <a href=\"https:\/\/www.dchost.com\/blog\/ddos-nedir-web-sitenizi-ddos-saldirilarindan-nasil-korursunuz\/\">DDoS nedir, web sitenizi nas\u0131l korursunuz rehberimizi<\/a> \u00f6neririz.<\/p>\n<h3><span id=\"Web_uygulamasi_zafiyetleri_SQL_Injection_XSS_ve_digerleri\">Web uygulamas\u0131 zafiyetleri: SQL Injection, XSS ve di\u011ferleri<\/span><\/h3>\n<p>Bir\u00e7ok sald\u0131rgan, \u00f6nce otomatik taray\u0131c\u0131larla y\u00fczlerce domain\u2019i taray\u0131p, ard\u0131ndan zafiyet buldu\u011fu hedeflere odaklan\u0131yor. En s\u0131k kar\u015f\u0131la\u015f\u0131lan a\u00e7\u0131klar ise:<\/p>\n<ul>\n<li><strong>SQL Injection:<\/strong> Kullan\u0131c\u0131 girdileri do\u011fru filtrelenmedi\u011finde veritaban\u0131na zararl\u0131 komut g\u00f6nderilmesi.<\/li>\n<li><strong>XSS (Cross-Site Scripting):<\/strong> Ziyaret\u00e7ilerin taray\u0131c\u0131s\u0131nda zararl\u0131 JavaScript kodu \u00e7al\u0131\u015ft\u0131r\u0131lmas\u0131.<\/li>\n<li><strong>Dosya y\u00fckleme a\u00e7\u0131klar\u0131:<\/strong> Zararl\u0131 script\u2019lerin resim veya belge gibi sisteme y\u00fcklenmesi.<\/li>\n<li><strong>Yetkilendirme ve oturum y\u00f6netimi hatalar\u0131:<\/strong> Kullan\u0131c\u0131n\u0131n rol\u00fcnden fazlas\u0131n\u0131 yapabilmesi, oturumu ele ge\u00e7irmeye a\u00e7\u0131k \u00e7erez ayarlar\u0131.<\/li>\n<\/ul>\n<p>Bu alan, \u00f6zellikle WordPress, Laravel, \u00f6zel PHP\/Node.js uygulamalar\u0131 i\u00e7in kritik. HTTP g\u00fcvenlik ba\u015fl\u0131klar\u0131, WAF (Web Application Firewall) kurallar\u0131 ve do\u011fru sunucu yap\u0131land\u0131rmas\u0131 bu tabloyu \u00f6nemli \u00f6l\u00e7\u00fcde iyile\u015ftiriyor. Ayr\u0131nt\u0131l\u0131 bir teknik \u00e7er\u00e7eve i\u00e7in <a href=\"https:\/\/www.dchost.com\/blog\/http-guvenlik-basliklari-rehberi-hsts-csp-ve-digerlerini-ne-zaman-nasil-uygulamalisin\/\">HTTP g\u00fcvenlik ba\u015fl\u0131klar\u0131 rehberimize<\/a> g\u00f6z atman\u0131z\u0131 tavsiye ederiz.<\/p>\n<h3><span id=\"Ic_tehditler_ve_yanlis_yapilandirmalar\">\u0130\u00e7 tehditler ve yanl\u0131\u015f yap\u0131land\u0131rmalar<\/span><\/h3>\n<p>Siber g\u00fcvenlik dendi\u011finde \u00e7o\u011fu ki\u015fi g\u00f6z\u00fcn\u00fc d\u0131\u015far\u0131 \u00e7eviriyor; ama en az d\u0131\u015f tehditler kadar kritik olan bir ba\u015fl\u0131k da i\u00e7 riskler ve insan hatas\u0131. DCHost\u2019ta g\u00f6rd\u00fc\u011f\u00fcm\u00fcz bir\u00e7ok vakada sorun \u015fu ba\u015fl\u0131klardan kaynaklan\u0131yor:<\/p>\n<ul>\n<li>Gere\u011finden fazla yetkiye sahip kullan\u0131c\u0131 hesaplar\u0131<\/li>\n<li>Eski \u00e7al\u0131\u015fanlar\u0131n kapat\u0131lmam\u0131\u015f eri\u015fimleri<\/li>\n<li>Production verilerinin test ortamlar\u0131na kontrols\u00fcz ta\u015f\u0131nmas\u0131<\/li>\n<li>Yanl\u0131\u015f yap\u0131land\u0131r\u0131lm\u0131\u015f g\u00fcvenlik gruplar\u0131 ve firewall kurallar\u0131<\/li>\n<\/ul>\n<p>Bu riskler i\u00e7in \u201cminimum yetki\u201d, d\u00fczenli eri\u015fim g\u00f6zden ge\u00e7irmeleri ve de\u011fi\u015fiklik y\u00f6netimi (change management) s\u00fcre\u00e7leri en az teknik \u00e7\u00f6z\u00fcmler kadar \u00f6nemli.<\/p>\n<h2><span id=\"Artan_tehditlere_karsi_temel_guvenlik_mimarisi\">Artan tehditlere kar\u015f\u0131 temel g\u00fcvenlik mimarisi<\/span><\/h2>\n<p>Tehditler artarken, savunma taraf\u0131nda da daha olgunla\u015fm\u0131\u015f baz\u0131 yakla\u015f\u0131mlar art\u0131k yayg\u0131nla\u015f\u0131yor. \u0130\u015fin \u00f6z\u00fc, tek bir b\u00fcy\u00fck g\u00fcvenlik duvar\u0131na de\u011fil, <strong>birden fazla savunma katman\u0131n\u0131n birlikte \u00e7al\u0131\u015fmas\u0131na<\/strong> g\u00fcvenmekten ge\u00e7iyor.<\/p>\n<h3><span id=\"Katmanli_guvenlik_yaklasimi\">Katmanl\u0131 g\u00fcvenlik yakla\u015f\u0131m\u0131<\/span><\/h3>\n<p>Katmanl\u0131 g\u00fcvenlik (defense in depth), bir sald\u0131rgan\u0131n hedefe ula\u015fmadan \u00f6nce ge\u00e7mek zorunda oldu\u011fu bir dizi bariyer olu\u015fturmak anlam\u0131na gelir. \u00d6rne\u011fin:<\/p>\n<ul>\n<li>A\u011f katman\u0131nda firewall ve DDoS korumas\u0131<\/li>\n<li>Uygulama katman\u0131nda WAF, rate limiting, input validation<\/li>\n<li>Kimlik katman\u0131nda MFA, IP k\u0131s\u0131tlamalar\u0131, rol bazl\u0131 eri\u015fim<\/li>\n<li>Veri katman\u0131nda \u015fifreleme, ayr\u0131k yedekleme, eri\u015fim log\u2019lar\u0131<\/li>\n<\/ul>\n<p>Buradaki ama\u00e7, \u201ctek bir noktadaki\u201d hata veya a\u00e7\u0131kl\u0131\u011f\u0131n t\u00fcm sistemi \u00e7\u00f6kertmesini engellemektir. \u00d6rne\u011fin WAF kural\u0131n\u0131z yanl\u0131\u015ft\u0131r ama veritaban\u0131 \u015fifrelemesi ve ayr\u0131k yedekleriniz sa\u011flamsa, fidye yaz\u0131l\u0131m\u0131 vakas\u0131n\u0131 \u00e7ok daha az hasarla atlatabilirsiniz.<\/p>\n<h3><span id=\"Sifir_guven_Zero_Trust_prensipleri\">S\u0131f\u0131r g\u00fcven (Zero Trust) prensipleri<\/span><\/h3>\n<p>Zero Trust yakla\u015f\u0131m\u0131n\u0131n temel c\u00fcmlesi \u015fudur: \u201cA\u011f\u0131n i\u00e7indekine de d\u0131\u015f\u0131ndakine de varsay\u0131lan olarak g\u00fcvenme.\u201d \u0130\u015fin prati\u011fe d\u00f6k\u00fclm\u00fc\u015f hali ise \u015funlar\u0131 i\u00e7eriyor:<\/p>\n<ul>\n<li>Her eri\u015fim iste\u011fini kimlik, cihaz ve ba\u011flam (lokasyon, saat, IP vb.) \u00fczerinden do\u011frulamak<\/li>\n<li>Uygulamalar ve servisler aras\u0131 trafi\u011fi de do\u011frulamak (mTLS, servis mesh, k\u0131s\u0131tl\u0131 API izinleri)<\/li>\n<li>Geni\u015f VPN t\u00fcnelleri yerine, <strong>uygulama bazl\u0131 eri\u015fim<\/strong> kurgulamak<\/li>\n<\/ul>\n<p>Zero Trust, \u00f6zellikle uzaktan \u00e7al\u0131\u015fan ekipler, mikro servis mimarileri ve \u00e7oklu veri merkezi\/sunucu senaryolar\u0131nda tehdit y\u00fczeyini ciddi \u00f6l\u00e7\u00fcde daraltan bir yakla\u015f\u0131m.<\/p>\n<h3><span id=\"Ag_segmentasyonu_ve_mikro_segmentasyon\">A\u011f segmentasyonu ve mikro segmentasyon<\/span><\/h3>\n<p>Tek bir d\u00fcz network yerine, rol ve risklere g\u00f6re b\u00f6l\u00fcnm\u00fc\u015f bir a\u011f tasar\u0131m\u0131 kurmak, bir sald\u0131rgan i\u00e7eri s\u0131zsa bile ilerlemesini zorla\u015ft\u0131r\u0131r. \u00d6rne\u011fin:<\/p>\n<ul>\n<li>Veritaban\u0131 sunucular\u0131n\u0131 sadece uygulama sunucular\u0131n\u0131n eri\u015febildi\u011fi ayr\u0131 bir VLAN\u2019da toplamak<\/li>\n<li>Y\u00f6netim panelleri, izleme sistemleri, yedek depolama sunucular\u0131 i\u00e7in ayr\u0131 y\u00f6netim a\u011f\u0131 kurmak<\/li>\n<li>Geli\u015ftirme\/staging ortam\u0131n\u0131 production\u2019dan kesin \u00e7izgilerle ay\u0131rmak<\/li>\n<\/ul>\n<p>DCHost ortamlar\u0131nda s\u0131k\u00e7a \u00f6nerdi\u011fimiz bir model; <strong>web + uygulama + veritaban\u0131<\/strong> katmanlar\u0131n\u0131 farkl\u0131 sunucular ve a\u011f kurallar\u0131yla ay\u0131rmak. Bu, hem performans\u0131 hem de g\u00fcvenli\u011fi ayn\u0131 anda iyile\u015ftiriyor.<\/p>\n<h2><span id=\"Sunucu_ve_hosting_tarafinda_neleri_yeniden_dusunmelisiniz\">Sunucu ve hosting taraf\u0131nda neleri yeniden d\u00fc\u015f\u00fcnmelisiniz?<\/span><\/h2>\n<p>Siber tehditler artarken, kulland\u0131\u011f\u0131n\u0131z hosting modelini ve sunucu mimarisini g\u00f6zden ge\u00e7irmek ka\u00e7\u0131n\u0131lmaz hale geliyor. <a href=\"https:\/\/www.dchost.com\/tr\/web-hosting\">payla\u015f\u0131ml\u0131 hosting<\/a>\u2019den VPS\u2019e, <a href=\"https:\/\/www.dchost.com\/tr\/fiziksel-sunucu\">dedicated sunucu<\/a>dan colocation\u2019a kadar her modelin ayr\u0131 sorumluluk alanlar\u0131 ve g\u00fcvenlik ihtiya\u00e7lar\u0131 var.<\/p>\n<h3><span id=\"Dogru_altyapi_modeli_Paylasimli_mi_VPS_mi_dedicated_mi\">Do\u011fru altyap\u0131 modeli: Payla\u015f\u0131ml\u0131 m\u0131, VPS mi, dedicated m\u0131?<\/span><\/h3>\n<p>G\u00fcvenlik perspektifinden bakt\u0131\u011f\u0131m\u0131zda:<\/p>\n<ul>\n<li><strong>Payla\u015f\u0131ml\u0131 hosting:<\/strong> K\u00fc\u00e7\u00fck siteler i\u00e7in pratik ve ekonomik. Ancak i\u015fletme kritik uygulamalar, hassas veri bar\u0131nd\u0131ran sistemler veya \u00f6zelle\u015ftirilmi\u015f g\u00fcvenlik politikalar\u0131 gerektiren projeler i\u00e7in k\u0131s\u0131tlay\u0131c\u0131 olabilir.<\/li>\n<li><strong>VPS (Sanal sunucu):<\/strong> \u0130zole kaynaklar ve root eri\u015fimi sayesinde g\u00fcvenlik sertle\u015ftirmesini daha ayr\u0131nt\u0131l\u0131 yapabilirsiniz. \u00d6zellikle firewall, WAF, izleme ve loglama i\u00e7in esneklik sa\u011flar.<\/li>\n<li><strong>Dedicated sunucu \/ colocation:<\/strong> Donan\u0131m\u0131 tamamen size ait olan veya sizin getirdi\u011finiz senaryoda, a\u011f topolojisinden disk \u015fifrelemesine kadar her \u015feyi ince ayarla kurma \u015fans\u0131n\u0131z olur; ama sorumluluk ve y\u00f6netim ihtiyac\u0131 da artar.<\/li>\n<\/ul>\n<p>Bu dengeyi anlamak i\u00e7in <a href=\"https:\/\/www.dchost.com\/blog\/dedicated-sunucu-mu-vps-mi-hangisi-isinize-yarar\/\">Dedicated sunucu mu VPS mi, hangisi i\u015finize yarar yaz\u0131m\u0131zda<\/a> hem performans hem de g\u00fcvenlik a\u00e7\u0131s\u0131ndan kar\u015f\u0131la\u015ft\u0131rmal\u0131 bir \u00e7er\u00e7eve sunmu\u015ftuk.<\/p>\n<h3><span id=\"Sunucu_sertlestirme_Varsayilanlari_birakmayin\">Sunucu sertle\u015ftirme: Varsay\u0131lanlar\u0131 b\u0131rakmay\u0131n<\/span><\/h3>\n<p>Yeni kurulan bir VPS veya dedicated sunucu, kutudan \u00e7\u0131kt\u0131\u011f\u0131 haliyle genellikle g\u00fcvenlik a\u00e7\u0131s\u0131ndan zay\u0131ft\u0131r. DCHost taraf\u0131nda en s\u0131k vurgulad\u0131\u011f\u0131m\u0131z sertle\u015ftirme ad\u0131mlar\u0131ndan baz\u0131lar\u0131 \u015funlar:<\/p>\n<ul>\n<li>SSH\/RDP portlar\u0131n\u0131 ve kimlik do\u011frulama y\u00f6ntemlerini sertle\u015ftirmek<\/li>\n<li>Gereksiz servis ve portlar\u0131 kapatmak<\/li>\n<li>UFW\/nftables gibi ara\u00e7larla temel firewall kurallar\u0131n\u0131 tan\u0131mlamak<\/li>\n<li>Fail2ban tarz\u0131 ara\u00e7larla brute-force giri\u015fimlerini otomatik engellemek<\/li>\n<li>D\u00fczenli g\u00fcvenlik g\u00fcncellemeleri ve kernel yamalar\u0131n\u0131 otomatize etmek<\/li>\n<\/ul>\n<p>Bu konuda ad\u0131m ad\u0131m ilerlemek isterseniz, <a href=\"https:\/\/www.dchost.com\/blog\/vps-sunucu-guvenligi-nasil-saglanir-kapiyi-acik-birakmadan-yasamanin-sirri\/\">VPS sunucu g\u00fcvenli\u011fi rehberimizde<\/a> pratik ve uygulanabilir bir kontrol listesi payla\u015ft\u0131k.<\/p>\n<h3><span id=\"Web_uygulamasi_guvenligi_WAF_guvenlik_basliklari_ve_uygulama_ayarlari\">Web uygulamas\u0131 g\u00fcvenli\u011fi: WAF, g\u00fcvenlik ba\u015fl\u0131klar\u0131 ve uygulama ayarlar\u0131<\/span><\/h3>\n<p>Uygulama katman\u0131n\u0131 korumadan sadece a\u011f katman\u0131ndaki firewall\u2019a g\u00fcvenmek art\u0131k yeterli de\u011fil. \u00d6zellikle WordPress, WooCommerce ve benzeri CMS\u2019ler i\u00e7in \u015fu ad\u0131mlar b\u00fcy\u00fck fark yarat\u0131yor:<\/p>\n<ul>\n<li>ModSecurity + OWASP CRS gibi bir WAF katman\u0131 eklemek<\/li>\n<li>Rate limiting ile login ve API u\u00e7 noktalar\u0131n\u0131 s\u0131n\u0131rlamak<\/li>\n<li>HSTS, CSP, X-Frame-Options, X-Content-Type-Options gibi <strong>HTTP g\u00fcvenlik ba\u015fl\u0131klar\u0131n\u0131<\/strong> do\u011fru konfig\u00fcre etmek<\/li>\n<li>Y\u00f6netim URL\u2019lerini gizlemek veya IP\/MFA ile s\u0131n\u0131rland\u0131rmak<\/li>\n<\/ul>\n<p>Bu ba\u015fl\u0131klar\u0131n her birini tek tek ele ald\u0131\u011f\u0131m\u0131z <a href=\"https:\/\/www.dchost.com\/blog\/http-guvenlik-basliklari-rehberi-hsts-csp-ve-digerlerini-ne-zaman-nasil-uygulamalisin\/\">HTTP g\u00fcvenlik ba\u015fl\u0131klar\u0131 rehberimiz<\/a> ve <a href=\"https:\/\/www.dchost.com\/blog\/modsecurity-ve-owasp-crs-ile-wafi-uysallastirmak-yanlis-pozitifleri-nasil-ehlilestirir-performansi-ne-zaman-ucururuz\/\">ModSecurity + OWASP CRS ile WAF rehberimiz<\/a> teknik detaylar i\u00e7in iyi referans olacakt\u0131r.<\/p>\n<h3><span id=\"WordPress_ve_populer_CMSler_icin_ozel_onlemler\">WordPress ve pop\u00fcler CMS\u2019ler i\u00e7in \u00f6zel \u00f6nlemler<\/span><\/h3>\n<p>Siber sald\u0131r\u0131 istatistiklerine bakt\u0131\u011f\u0131m\u0131zda, pop\u00fcler CMS\u2019lerin hem b\u00fcy\u00fck bir hedef hem de iyi korunmad\u0131\u011f\u0131nda kolay bir giri\u015f noktas\u0131 oldu\u011funu g\u00f6r\u00fcyoruz. DCHost olarak WordPress i\u00e7in \u00f6zellikle \u015fu hatalar\u0131 s\u0131k g\u00f6r\u00fcyoruz:<\/p>\n<ul>\n<li>G\u00fcncellenmeyen \u00e7ekirdek, tema ve eklentiler<\/li>\n<li>G\u00fcvenlik eklentilerinin yanl\u0131\u015f veya eksik konfig\u00fcrasyonu<\/li>\n<li>wp-admin ve wp-login.php sayfalar\u0131na s\u0131n\u0131rs\u0131z eri\u015fim<\/li>\n<li>Zay\u0131f dosya izinleri ve a\u00e7\u0131k b\u0131rak\u0131lm\u0131\u015f debug ayarlar\u0131<\/li>\n<\/ul>\n<p>T\u00fcm bunlar\u0131 sistematik \u015fekilde ele almak i\u00e7in haz\u0131rlad\u0131\u011f\u0131m\u0131z <a href=\"https:\/\/www.dchost.com\/blog\/wordpress-guvenlik-sertlestirme-kontrol-listesi-dosya-izinleri-salt-keys-xml-rpc-ufw-fail2ban-nasil-tatli-tatli-kurulur\/\">WordPress g\u00fcvenlik sertle\u015ftirme kontrol listesi<\/a>, dosya izinlerinden firewall ayarlar\u0131na kadar kapsaml\u0131 bir rehber sunuyor.<\/p>\n<h3><span id=\"Yedekleme_ve_felaket_kurtarma_Fidye_yazilimi_sonrasi_hayatta_kalma_plani\">Yedekleme ve felaket kurtarma: Fidye yaz\u0131l\u0131m\u0131 sonras\u0131 hayatta kalma plan\u0131<\/span><\/h3>\n<p>Artan siber tehditler kar\u015f\u0131s\u0131nda, yedekleme politikan\u0131z fiilen sizin \u201cson savunma hatt\u0131n\u0131z\u201d. Sa\u011flam bir plan \u015fu \u00f6zellikleri i\u00e7ermeli:<\/p>\n<ul>\n<li>\u00dcretim ortam\u0131ndan mant\u0131ksal olarak ayr\u0131lm\u0131\u015f yedek lokasyonu<\/li>\n<li>D\u00fczenli otomatik yedekleme ve periyodik geri y\u00fckleme testleri<\/li>\n<li>Yedeklerin b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc do\u011frulayan mekanizmalar<\/li>\n<li>Yedek eri\u015fim yetkilerinin s\u0131k\u0131 kontrol\u00fc ve loglanmas\u0131<\/li>\n<\/ul>\n<p>Fidye yaz\u0131l\u0131m\u0131 senaryosunda, \u00e7o\u011fu i\u015fletmenin <strong>ger\u00e7ek fark\u0131<\/strong> yedeklerinin kalitesi ve geri d\u00f6n\u00fc\u015f h\u0131zlar\u0131 belirliyor. Bu konuya \u00f6zel ilgi duyuyorsan\u0131z, S3 uyumlu depolama ve object lock gibi geli\u015fmi\u015f teknikleri anlatt\u0131\u011f\u0131m\u0131z S3 ve felaket kurtarma odakl\u0131 rehberlerimiz de size yol g\u00f6sterebilir.<\/p>\n<h2><span id=\"Isletmeler_icin_uygulanabilir_guvenlik_yol_haritasi\">\u0130\u015fletmeler i\u00e7in uygulanabilir g\u00fcvenlik yol haritas\u0131<\/span><\/h2>\n<p>Tehditlerin artt\u0131\u011f\u0131n\u0131 bilmek tek ba\u015f\u0131na i\u015fe yaram\u0131yor; \u00f6nemli olan, bunu somut ad\u0131mlara d\u00f6kebilmek. Burada, DCHost\u2019ta m\u00fc\u015fterilerle \u00e7al\u0131\u015f\u0131rken s\u0131kl\u0131kla kulland\u0131\u011f\u0131m\u0131z, pratik bir 3 a\u015famal\u0131 yakla\u015f\u0131m\u0131 payla\u015fal\u0131m.<\/p>\n<h3><span id=\"1_Asama_030_gun_Envanter_ve_temel_hijyen\">1. A\u015fama (0\u201330 g\u00fcn): Envanter ve temel hijyen<\/span><\/h3>\n<p>\u0130lk 30 g\u00fcn\u00fcn hedefi, \u201cneredeyiz ve en b\u00fcy\u00fck a\u00e7\u0131klar\u0131m\u0131z nerede?\u201d sorular\u0131n\u0131 yan\u0131tlamak olmal\u0131:<\/p>\n<ul>\n<li>T\u00fcm domain, sunucu, uygulama ve entegrasyon envanterini \u00e7\u0131kar\u0131n.<\/li>\n<li>T\u00fcm y\u00f6netim panelleri, SSH\/RDP, veritaban\u0131 eri\u015fimleri i\u00e7in g\u00fc\u00e7l\u00fc \u015fifre + MFA zorunlu hale getirin.<\/li>\n<li>G\u00fcncellemeleri uygulay\u0131n: \u0130\u015fletim sistemi, panel yaz\u0131l\u0131m\u0131, uygulama \u00e7at\u0131lar\u0131, eklentiler.<\/li>\n<li>Temel firewall kurallar\u0131n\u0131 belirleyip gereksiz portlar\u0131 kapat\u0131n.<\/li>\n<\/ul>\n<p>Bu a\u015famada bile, do\u011fru yap\u0131lan birka\u00e7 hamleyle risklerin \u00f6nemli b\u00f6l\u00fcm\u00fcn\u00fc bertaraf edebilirsiniz. Daha stratejik bir \u00e7er\u00e7eve i\u00e7in <a href=\"https:\/\/www.dchost.com\/blog\/siber-guvenlik-tehditlerinde-artis-abarti-mi-neden-bu-kadar-artti-ve-ne-yapabiliriz\/\">Siber g\u00fcvenlik tehditlerinde art\u0131\u015f abart\u0131 m\u0131 yaz\u0131m\u0131zda<\/a> \u201cnereden ba\u015flamal\u0131y\u0131z?\u201d sorusuna geni\u015f bir perspektiften yan\u0131t verdik.<\/p>\n<h3><span id=\"2_Asama_3090_gun_Izleme_loglama_ve_gorunurluk\">2. A\u015fama (30\u201390 g\u00fcn): \u0130zleme, loglama ve g\u00f6r\u00fcn\u00fcrl\u00fck<\/span><\/h3>\n<p>Bir sald\u0131r\u0131y\u0131 \u00f6nleyemedi\u011finizde bile <strong>erken fark etmek<\/strong> \u00e7ok \u015fey de\u011fi\u015ftirir. Bu a\u015famada odaklanman\u0131z gerekenler:<\/p>\n<ul>\n<li>Sunucu, uygulama ve g\u00fcvenlik duvar\u0131 loglar\u0131n\u0131n merkezi toplanmas\u0131<\/li>\n<li>\u015e\u00fcpheli login denemeleri, ba\u015far\u0131s\u0131z MFA, beklenmeyen IP\u2019ler i\u00e7in uyar\u0131 kurallar\u0131<\/li>\n<li>Kaynak kullan\u0131m\u0131ndaki ani s\u0131\u00e7ramalar (CPU, IO, trafik) i\u00e7in alarm e\u015fi\u011fi tan\u0131mlar\u0131<\/li>\n<li>En az\u0131ndan kritik sistemler i\u00e7in 7\/24 temel izleme (uptime, yan\u0131t s\u00fcresi, sertifika s\u00fcresi vb.)<\/li>\n<\/ul>\n<p>DCHost ortamlar\u0131nda, m\u00fc\u015fterilerimizin log ve izleme altyap\u0131lar\u0131n\u0131 sade ama etkili \u00e7\u00f6z\u00fcmlerle kurmalar\u0131na s\u0131k\u00e7a destek oluyoruz. \u00d6nemli olan, tamamen m\u00fckemmel bir SIEM kurmak de\u011fil; en kritik sinyalleri h\u0131zl\u0131ca yakalayaca\u011f\u0131n\u0131z bir temel d\u00fczeyi garanti alt\u0131na almak.<\/p>\n<h3><span id=\"3_Asama_90_gun_ve_sonrasi_Surecler_egitim_ve_olgunlasma\">3. A\u015fama (90 g\u00fcn ve sonras\u0131): S\u00fcre\u00e7ler, e\u011fitim ve olgunla\u015fma<\/span><\/h3>\n<p>G\u00fcvenlik bir kere \u00e7\u00f6z\u00fcp rafa kald\u0131raca\u011f\u0131n\u0131z bir proje de\u011fil, canl\u0131 bir s\u00fcre\u00e7. 90 g\u00fcnden sonra oda\u011f\u0131 \u015fu ba\u015fl\u0131klara kayd\u0131rmak mant\u0131kl\u0131:<\/p>\n<ul>\n<li>De\u011fi\u015fiklik y\u00f6netimi: Production\u2019a \u00e7\u0131kan her de\u011fi\u015fikli\u011fin g\u00fcvenlik etkisi de\u011ferlendirilsin.<\/li>\n<li>Eri\u015fim g\u00f6zden ge\u00e7irme: 3\u20136 ayda bir t\u00fcm eri\u015fim listeleri tazelensin.<\/li>\n<li>Personel e\u011fitimi: \u00d6zellikle phishing ve parola hijyeni konusunda d\u00fczenli hat\u0131rlatmalar.<\/li>\n<li>Felaket senaryolar\u0131 tatbikat\u0131: \u201cVeritaban\u0131m\u0131z \u015fifrelendi, ne yap\u0131yoruz?\u201d sorusuna pratik yan\u0131tlar.<\/li>\n<\/ul>\n<p>Daha geni\u015f bir kurumsal perspektif ar\u0131yorsan\u0131z, <a href=\"https:\/\/www.dchost.com\/blog\/siber-guvenlik-tehditleri-artiyor-isletmeler-icin-gercekci-yol-haritasi\/\">i\u015fletmeler i\u00e7in ger\u00e7ek\u00e7i yol haritas\u0131 yaz\u0131m\u0131z<\/a> bu a\u015famalar\u0131 y\u00f6netim diliyle anlatan tamamlay\u0131c\u0131 bir rehber niteli\u011finde.<\/p>\n<h2><span id=\"DCHost_olarak_neleri_standart_hale_getiriyoruz\">DCHost olarak neleri standart hale getiriyoruz?<\/span><\/h2>\n<p>DCHost\u2019ta, sunucu ve bar\u0131nd\u0131rma hizmetlerini tasarlarken temel varsay\u0131m\u0131m\u0131z \u015fu: <strong>Tehditler artmaya devam edecek, mimari buna g\u00f6re olgun olmal\u0131.<\/strong> Bu y\u00fczden bir\u00e7ok g\u00fcvenlik bile\u015fenini altyap\u0131n\u0131n do\u011fal par\u00e7as\u0131 haline getirmeye \u00f6zen g\u00f6steriyoruz.<\/p>\n<ul>\n<li><strong>G\u00fcvenli veri merkezi altyap\u0131s\u0131:<\/strong> Fiziksel eri\u015fim kontrolleri, a\u011f segmentasyonu, yedekli g\u00fc\u00e7 ve ba\u011flant\u0131 sistemleri sayesinde sunucular\u0131n\u0131z\u0131n bar\u0131nd\u0131\u011f\u0131 katman g\u00fcvenli ve dayan\u0131kl\u0131 bir yap\u0131 \u00fczerine kurulu.<\/li>\n<li><strong>G\u00fc\u00e7l\u00fc a\u011f politikalar\u0131:<\/strong> M\u00fc\u015fterilerimizin talebi do\u011frultusunda, DDoS korumas\u0131, geli\u015fmi\u015f firewall kurallar\u0131 ve \u00f6zel a\u011f tasar\u0131mlar\u0131yla, sald\u0131r\u0131 y\u00fczeyini bar\u0131nd\u0131rma katman\u0131nda minimize etmeye odaklan\u0131yoruz.<\/li>\n<li><strong>Yedekleme ve felaket kurtarma se\u00e7enekleri:<\/strong> 3-2-1 stratejisine uyumlu olacak \u015fekilde, otomatik yedekler, ayr\u0131k depolama ve geri y\u00fckleme testlerinde m\u00fc\u015fterilerimizin yan\u0131nda oluyoruz.<\/li>\n<li><strong>VPS ve dedicated sunucularda sertle\u015ftirme rehberli\u011fi:<\/strong> Kimi m\u00fc\u015fteriler tam y\u00f6netilen hizmet isterken, kimi kendi sunucusunu y\u00f6netmeyi tercih ediyor. Her iki senaryoda da g\u00fcvenlik sertle\u015ftirmesi konusunda net dok\u00fcmantasyon ve pratik destek sunmaya \u00f6zen g\u00f6steriyoruz.<\/li>\n<li><strong>WordPress ve pop\u00fcler CMS\u2019ler i\u00e7in en iyi pratikler:<\/strong> WordPress g\u00fcvenlik, performans ve yedekleme taraf\u0131nda onlarca rehber haz\u0131rlamam\u0131z\u0131n sebebi tam olarak bu: Saha deneyimini do\u011frudan payla\u015fmak.<\/li>\n<\/ul>\n<p>\u00d6zellikle uygulama bar\u0131nd\u0131rma, e-ticaret, kurumsal web siteleri ve \u00f6zel yaz\u0131l\u0131m projelerinde, DCHost ekibi olarak altyap\u0131y\u0131 yaln\u0131zca \u201c\u00e7al\u0131\u015fs\u0131n\u201d diye de\u011fil, <strong>g\u00fcvenli ve s\u00fcrd\u00fcr\u00fclebilir olsun<\/strong> diye tasarl\u0131yoruz.<\/p>\n<h2><span id=\"Sonuc_Tehditler_artiyor_peki_siz_ne_yapacaksiniz\">Sonu\u00e7: Tehditler art\u0131yor, peki siz ne yapacaks\u0131n\u0131z?<\/span><\/h2>\n<p>Siber g\u00fcvenlik tehditlerinin artt\u0131\u011f\u0131 konusunda art\u0131k kimsenin \u015f\u00fcphesi yok. Ancak bu ger\u00e7e\u011fin \u00fczerine ne in\u015fa edece\u011finiz size kalm\u0131\u015f. \u0130ki u\u00e7 senaryo var: Ya bu tabloyu g\u00f6rmezden gelip \u201cbize bir \u015fey olmaz\u201d demeye devam edebilirsiniz, ya da i\u015fletmenizin \u00f6l\u00e7e\u011fine uygun, ad\u0131m ad\u0131m ilerleyen bir g\u00fcvenlik yol haritas\u0131 olu\u015fturursunuz.<\/p>\n<p>Bu yaz\u0131da; artan tehditlerin nedenlerini, en s\u0131k kar\u015f\u0131la\u015f\u0131lan sald\u0131r\u0131 t\u00fcrlerini, sunucu ve hosting taraf\u0131nda at\u0131lmas\u0131 gereken somut ad\u0131mlar\u0131 ve uygulanabilir bir g\u00fcvenlik yol haritas\u0131n\u0131 m\u00fcmk\u00fcn oldu\u011funca teknik ama anla\u015f\u0131l\u0131r bir dille \u00f6zetlemeye \u00e7al\u0131\u015ft\u0131k. Daha derine inmek isterseniz, <a href=\"https:\/\/www.dchost.com\/blog\/siber-guvenlik-tehditlerinde-artis-sunucu-ve-hosting-tarafinda-ne-yapmalisiniz\/\">sunucu ve hosting taraf\u0131nda neler yapman\u0131z gerekti\u011fini anlatt\u0131\u011f\u0131m\u0131z kapsaml\u0131 rehber<\/a> iyi bir sonraki ad\u0131m olacakt\u0131r.<\/p>\n<p>E\u011fer \u201cnereden ba\u015flamal\u0131y\u0131m, hangi sunucu modelinde hangi \u00f6ncelikleri almal\u0131y\u0131m, mevcut yap\u0131m\u0131 nas\u0131l g\u00fc\u00e7lendiririm?\u201d sorular\u0131 kafan\u0131z\u0131 kurcal\u0131yorsa, DCHost ekibiyle detayl\u0131 bir de\u011ferlendirme yapmak i\u00e7in bizimle ileti\u015fime ge\u00e7ebilirsiniz. Mevcut altyap\u0131n\u0131z\u0131 birlikte g\u00f6zden ge\u00e7irip; a\u011f tasar\u0131m\u0131ndan yedeklemeye, WAF kurallar\u0131ndan eri\u015fim politikalar\u0131na kadar pratik ve uygulanabilir bir plan \u00e7\u0131karabiliriz. Tehditler artmaya devam edecek; \u00f6nemli olan, altyap\u0131n\u0131z\u0131n bu dalgay\u0131 so\u011fukkanl\u0131l\u0131kla kar\u015f\u0131layacak \u015fekilde tasarlanm\u0131\u015f olmas\u0131.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Siber g\u00fcvenlik tehditleri art\u0131k sadece bankalar\u0131n, teknoloji devlerinin veya kritik altyap\u0131lar\u0131n sorunu de\u011fil. Orta \u00f6l\u00e7ekli bir e-ticaret sitesi, birka\u00e7 m\u00fc\u015fterili bir ajans, bir hukuk b\u00fcrosu ya da e\u011fitim platformu\u2026 DCHost olarak sahada g\u00f6rd\u00fc\u011f\u00fcm\u00fcz tablo, \u00f6l\u00e7ekten ba\u011f\u0131ms\u0131z herkesin do\u011frudan hedef olabildi\u011fi y\u00f6n\u00fcnde. \u00d6zellikle son y\u0131llarda hem sald\u0131r\u0131 say\u0131s\u0131 hem de sald\u0131r\u0131lar\u0131n karma\u015f\u0131kl\u0131\u011f\u0131 belirgin bi\u00e7imde artm\u0131\u015f durumda. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2617,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24,33,30,25],"tags":[],"class_list":["post-2614","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hosting","category-nasil-yapilir","category-nedir","category-sunucu"],"_links":{"self":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/posts\/2614","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/comments?post=2614"}],"version-history":[{"count":0,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/posts\/2614\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/media\/2617"}],"wp:attachment":[{"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/media?parent=2614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/categories?post=2614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dchost.com\/blog\/wp-json\/wp\/v2\/tags?post=2614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}